CN106116194A - A kind of waste residue that casts reclaims the high-strength lightweight of preparation - Google Patents
A kind of waste residue that casts reclaims the high-strength lightweight of preparation Download PDFInfo
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- CN106116194A CN106116194A CN201610461345.6A CN201610461345A CN106116194A CN 106116194 A CN106116194 A CN 106116194A CN 201610461345 A CN201610461345 A CN 201610461345A CN 106116194 A CN106116194 A CN 106116194A
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- mixture
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- waste residue
- glass fibers
- polypropylene fibre
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A kind of waste residue that casts of disclosure of the invention reclaims the high-strength lightweight of preparation, is made up of following component: polypropylene fibre and mixture of glass fibers, mud, waste molding sand, flyash, potter's clay, lignosulfonic acid calcium powder, Paris white, bauxite, casting waste residue, oil shale.The light-weight aggregate of the present invention is by coordinating, with the blended process of bauxite, the casting waste residue and polypropylene fibre and mixture of glass fibers added to potter's clay, while ensureing and improving light-weight aggregate intensity, reduce the incorporation of other material, reduce the cost of light-weight aggregate, production technology is simple, low cost, by the synergism between each material, the light-weight aggregate making preparation obtains preferable workability and Frost Resistance, uniformity are greatly improved, pressure-proof and snap-resistent intensity improves, toughness significantly improves, energy-conserving and environment-protective；By casting waste residue is recycled, decrease environmental pollution, protect ecological environment.
Description
Technical field
The present invention relates to light-weight aggregate preparation field, particularly relate to a kind of waste residue that casts and reclaim the high-strength lightweight of preparation.
Background technology
Along with the increase day by day of china natural resources Yu ambient pressure, government department proposes the most in time and " realizes sustainable development
Exhibition, build a resource-conserving and environment-friendly society " requirement；Propose and " to guarantee the energy realizing determining in Eleventh-Five Year Plan
Consumption reduction by 20%, total emissions of major pollutants reduce 10% " target；And determine 2007 to start a new round " joint in the whole nation
Can reduce discharging " storm, it is also proposed that " energy-saving and emission-reduction " are the breaches that China transforms mode of economic growth, increases economic efficiency.And
The main garbage that alloy iron castings production process produces is antiquated sand, waste residue, dust and waste gas.Casting waste residue is cupola melting
During inevitable outcome, according to statistics, often produce 1t castings it is necessary to discharge waste residue about 300kg, whole nation foundry industry is every year altogether
Meter output waste residue about reaches 6,000,000 tons, if can not recycle, environment can cause destruction greatly；Existing light collection
Material production needs to consume substantial amounts of material, to bringing great pressure in all kinds of resources.
Summary of the invention
It is an object of the invention to provide a kind of waste residue that casts and reclaim the high-strength lightweight of preparation, real by the following technical programs
Existing:
A kind of waste residue that casts reclaims the high-strength lightweight of preparation, is made up of following component by weight: polypropylene fibre and glass
Glass fibre blend 1, mud 10, waste molding sand 15, flyash 3, potter's clay 10, lignosulfonic acid calcium powder 0.1, Paris white 2, aluminum vitriol
Soil 5, casting waste residue 42, oil shale 4；
Described casting waste residue carries out process through in the following manner and screens:
1) casting waste residue is carried out 300 mesh particle filters, be unsatisfactory for this granularity, use ball mill pulverizer to carry out processing to granularity
Reach 300 mesh；
2) reach the casting waste residue of 300 mesh adds carbon dust and the bentonite mixtures of its quality 7% to granularity, after mix homogeneously,
Then carrying out roasting, sintering temperature is 756 DEG C, and roasting time is 78min, and described carbon dust and carbon dust in bentonite mixtures are with swollen
Profit soil is mixed by 3:1 mass ratio, and described bentonite mixes front through pretreatment with carbon dust: bentonite first adds to matter
Measure after the sulfuric acid solution that concentration is 6.4% soaks 20 minutes at 94 DEG C, filter, then use 267 DEG C of temperature calcination 40 points
Clock, is then directly appended in cold water, after soaking 10 minutes, filters, dries,；
3) the casting waste residue through calcination process carrying out magnetic separation, employing variation magnetic field, magnetic field, initial magnetic field intensity is set to
0.2T, high magnetic field intensity is set to 1.6T, from 0.2T, with 02T/10s speed be increased to 1.6T stop, then with
0.2T/5s speed drops to 0.2T and stops, and circulates successively；
4) can isolate two kinds of mixture after magnetic separation, one is ferric charge, and one is not ferric charge, collects not ferric charge,
?；
Described polypropylene fibre and polypropylene fibre in mixture of glass fibers and glass fibre mix by 5:1 mass ratio and
Becoming, described polypropylene fibre and mixture of glass fibers are through pretreatment: added with mixture of glass fibers by polypropylene fibre
In the itaconic acid solution that mass concentration is 12.8, it is heated to 69 DEG C, after being incubated 20 minutes, is quickly cooled to 2 DEG C, be incubated 15 points
Zhong Hou, takes out, and clear-cutting forestland is to room temperature；
Described potter's clay processes through being blended with bauxite: potter's clay is the most admixed together with bauxite, uses 263 DEG C of temperature to forge
After burning 40 minutes, it is directly appended in cold water, soaks 20 minutes, refilter, be then added to the propylene that mass concentration is 4.68%
In acid solution, at 69 DEG C, after soaking 15 minutes, filter, washing, dry,；
Described waste molding sand processes through being blended with oil shale: add mixture quality 1% with oil shale after being mixed by waste molding sand
Brown corundum abrasive mix homogeneously after, add in the glycerite that mass concentration is 5.87%, after grinding 40 minutes, filter, i.e.
Can.
The fly ash lightweight aggregate of a kind of light weight high intensity, is made up of step in detail below:
(1) by polypropylene fibre and mixture of glass fibers, mud, waste molding sand, flyash, potter's clay, lignosulfonic acid calcium powder, carbon
Acid calcium powder, bauxite, casting waste residue, oil shale are the most admixed together, obtain mixture 1；
(2), after mixture 1 being carried out ball milling 40 minutes, the water adding mixture quality 6.5% stirs, and stands 5 minutes,
To mixture 2；
(3) by extruded for mixture 2, molding stock is obtained；
(4) blank is dried lower 3 hours at 100 DEG C, is then heated to 458 DEG C, is incubated 15 minutes, then is warming up to 1160 DEG C of roastings
After 15 minutes, stop heating, be incubated 10 minutes；
(5) naturally cool to room temperature, i.e. can get described high-strength lightweight.
The present invention is through substantial amounts of experimentation, by adding a small amount of lignosulfonic acid calcium powder cylinder to light-weight aggregate of the present invention
Compressive Strength has strong influence, by series of experiment research, finds when lignosulfonic acid calcium powder addition is 0.1 weight portion
Time, the cylindrical compress strength of light-weight aggregate of the present invention can be made to promote effect maximum, below or above this weight portion, not only will not be to this
The cylindrical compress strength of bright light-weight aggregate has lifting effect, can reduce to a certain extent on the contrary.
The present invention is through substantial amounts of experimentation, and by the research to various fibers, the present invention is by by polypropylene fibre
Mix by a certain percentage with glass fibre, and process, the toughness of the concrete that light-weight aggregate is made, pressure-proof and snap-resistent intensity,
The impact of workability and apparent density is the biggest.Result shows, polypropylene fibre coordinates with the addition of mixture of glass fibers
The casting waste residue that the present invention uses, makes the uniformity of concrete improve, and pressure-proof and snap-resistent intensity has been respectively increased 38% and 24%, toughness
Significantly improve.
The method have the benefit that the light-weight aggregate of the present invention is by coordinating, with the blended process of bauxite, the casting added to potter's clay
Make waste residue and polypropylene fibre and mixture of glass fibers, while ensureing and improving light-weight aggregate intensity, reduce other thing
The incorporation of material, reduces the cost of light-weight aggregate, and production technology is simple, and low cost, by the synergism between each material so that
The light-weight aggregate of preparation obtains preferable workability and Frost Resistance, uniformity are greatly improved, and pressure-proof and snap-resistent intensity carries
Height, toughness significantly improves, energy-conserving and environment-protective；By casting waste residue is recycled, decrease environmental pollution, protect ecological ring
Border；The preparation method of the present invention had the most both been saved man-hour, had been saved the energy, reduced again cost.
Detailed description of the invention
A kind of waste residue that casts reclaims the high-strength lightweight of preparation, is made up of following component by weight: polypropylene fibre
With mixture of glass fibers 1, mud 10, waste molding sand 15, flyash 3, potter's clay 10, lignosulfonic acid calcium powder 0.1, Paris white 2,
Bauxite 5, casting waste residue 42, oil shale 4；
Described casting waste residue carries out process through in the following manner and screens:
1) casting waste residue is carried out 300 mesh particle filters, be unsatisfactory for this granularity, use ball mill pulverizer to carry out processing to granularity
Reach 300 mesh；
2) reach the casting waste residue of 300 mesh adds carbon dust and the bentonite mixtures of its quality 7% to granularity, after mix homogeneously,
Then carrying out roasting, sintering temperature is 756 DEG C, and roasting time is 78min, and described carbon dust and carbon dust in bentonite mixtures are with swollen
Profit soil is mixed by 3:1 mass ratio, and described bentonite mixes front through pretreatment with carbon dust: bentonite first adds to matter
Measure after the sulfuric acid solution that concentration is 6.4% soaks 20 minutes at 94 DEG C, filter, then use 267 DEG C of temperature calcination 40 points
Clock, is then directly appended in cold water, after soaking 10 minutes, filters, dries,；
3) the casting waste residue through calcination process carrying out magnetic separation, employing variation magnetic field, magnetic field, initial magnetic field intensity is set to
0.2T, high magnetic field intensity is set to 1.6T, from 0.2T, with 02T/10s speed be increased to 1.6T stop, then with
0.2T/5s speed drops to 0.2T and stops, and circulates successively；
4) can isolate two kinds of mixture after magnetic separation, one is ferric charge, and one is not ferric charge, collects not ferric charge,
?；
Described polypropylene fibre and polypropylene fibre in mixture of glass fibers and glass fibre mix by 5:1 mass ratio and
Becoming, described polypropylene fibre and mixture of glass fibers are through pretreatment: added with mixture of glass fibers by polypropylene fibre
In the itaconic acid solution that mass concentration is 12.8, it is heated to 69 DEG C, after being incubated 20 minutes, is quickly cooled to 2 DEG C, be incubated 15 points
Zhong Hou, takes out, and clear-cutting forestland is to room temperature；
Described potter's clay processes through being blended with bauxite: potter's clay is the most admixed together with bauxite, uses 263 DEG C of temperature to forge
After burning 40 minutes, it is directly appended in cold water, soaks 20 minutes, refilter, be then added to the propylene that mass concentration is 4.68%
In acid solution, at 69 DEG C, after soaking 15 minutes, filter, washing, dry,；
Described waste molding sand processes through being blended with oil shale: add mixture quality 1% with oil shale after being mixed by waste molding sand
Brown corundum abrasive mix homogeneously after, add in the glycerite that mass concentration is 5.87%, after grinding 40 minutes, filter, i.e.
Can.
The fly ash lightweight aggregate of a kind of light weight high intensity, is made up of step in detail below:
(1) by polypropylene fibre and mixture of glass fibers, mud, waste molding sand, flyash, potter's clay, lignosulfonic acid calcium powder, carbon
Acid calcium powder, bauxite, casting waste residue, oil shale are the most admixed together, obtain mixture 1；
(2), after mixture 1 being carried out ball milling 40 minutes, the water adding mixture quality 6.5% stirs, and stands 5 minutes,
To mixture 2；
(3) by extruded for mixture 2, molding stock is obtained；
(4) blank is dried lower 3 hours at 100 DEG C, is then heated to 458 DEG C, is incubated 15 minutes, then is warming up to 1160 DEG C of roastings
After 15 minutes, stop heating, be incubated 10 minutes；
(5) naturally cool to room temperature, i.e. can get described high-strength lightweight.
By the casting waste residue addition impacts on light-weight aggregate of the present invention different in the experimentation present invention:
| Casting waste residue adds weight portion | Porosity % | Percent opening % | Water absorption rate 24h % | Cylindrical compress strength MPa | BS crush index value |
| 38 | 44 | 4.6 | 0.50 | 4.0 | 28.4 |
| 40 | 46 | 3.4 | 0.46 | 5.0 | 26.2 |
| 42 | 48 | 1.8 | 0.38 | 7.0 | 24.7 |
| 44 | 51 | 3.2 | 0.43 | 4.0 | 25.7 |
| 46 | 53 | 3.9 | 0.49 | 4.0 | 27.9 |
Table 1
As can be seen from Table 1, the number of the addition casting waste residue in the present invention directly influences the properties of light-weight aggregate.
In the present invention, potter's clay and bauxite are without blended process, the light-weight aggregate performance made:
| Porosity % | Percent opening % | Water absorption rate 24h % | Cylindrical compress strength MPa | BS crush index value |
| 46 | 3.9 | 0.52 | 4.0 | 27.4 |
Table 2
As can be seen from Table 2, add the potter's clay without blended process and bauxite, make light-weight aggregate performance and substantially reduce.
Claims (2)
1. the high-strength lightweight casting waste residue recovery preparation, it is characterised in that be made up of following component by weight: poly-
Tacryl and mixture of glass fibers 1, mud 10, waste molding sand 15, flyash 3, potter's clay 10, lignosulfonic acid calcium powder 0.1, carbon
Acid calcium powder 2, bauxite 5, casting waste residue 42, oil shale 4；
Described casting waste residue carries out process through in the following manner and screens:
1) casting waste residue is carried out 300 mesh particle filters, be unsatisfactory for this granularity, use ball mill pulverizer to carry out processing to granularity
Reach 300 mesh；
2) reach the casting waste residue of 300 mesh adds carbon dust and the bentonite mixtures of its quality 7% to granularity, after mix homogeneously,
Then carrying out roasting, sintering temperature is 756 DEG C, and roasting time is 78min, and described carbon dust and carbon dust in bentonite mixtures are with swollen
Profit soil is mixed by 3:1 mass ratio, and described bentonite mixes front through pretreatment with carbon dust: bentonite first adds to matter
Measure after the sulfuric acid solution that concentration is 6.4% soaks 20 minutes at 94 DEG C, filter, then use 267 DEG C of temperature calcination 40 points
Clock, is then directly appended in cold water, after soaking 10 minutes, filters, dries,；
3) the casting waste residue through calcination process carrying out magnetic separation, employing variation magnetic field, magnetic field, initial magnetic field intensity is set to
0.2T, high magnetic field intensity is set to 1.6T, from 0.2T, with 02T/10s speed be increased to 1.6T stop, then with
0.2T/5s speed drops to 0.2T and stops, and circulates successively；
4) can isolate two kinds of mixture after magnetic separation, one is ferric charge, and one is not ferric charge, collects not ferric charge,
?；
Described polypropylene fibre and polypropylene fibre in mixture of glass fibers and glass fibre mix by 5:1 mass ratio and
Becoming, described polypropylene fibre and mixture of glass fibers are through pretreatment: added with mixture of glass fibers by polypropylene fibre
In the itaconic acid solution that mass concentration is 12.8, it is heated to 69 DEG C, after being incubated 20 minutes, is quickly cooled to 2 DEG C, be incubated 15 points
Zhong Hou, takes out, and clear-cutting forestland is to room temperature；
Described potter's clay processes through being blended with bauxite: potter's clay is the most admixed together with bauxite, uses 263 DEG C of temperature to forge
After burning 40 minutes, it is directly appended in cold water, soaks 20 minutes, refilter, be then added to the propylene that mass concentration is 4.68%
In acid solution, at 69 DEG C, after soaking 15 minutes, filter, washing, dry,；
Described waste molding sand processes through being blended with oil shale: add mixture quality 1% with oil shale after being mixed by waste molding sand
Brown corundum abrasive mix homogeneously after, add in the glycerite that mass concentration is 5.87%, after grinding 40 minutes, filter, i.e.
Can.
2. according to the fly ash lightweight aggregate of light weight high intensity a kind of described in claim 1, it is characterised in that by walking in detail below
Suddenly make:
(1) by polypropylene fibre and mixture of glass fibers, mud, waste molding sand, flyash, potter's clay, lignosulfonic acid calcium powder, carbon
Acid calcium powder, bauxite, casting waste residue, oil shale are the most admixed together, obtain mixture 1；
(2), after mixture 1 being carried out ball milling 40 minutes, the water adding mixture quality 6.5% stirs, and stands 5 minutes,
To mixture 2；
(3) by extruded for mixture 2, molding stock is obtained；
(4) blank is dried lower 3 hours at 100 DEG C, is then heated to 458 DEG C, is incubated 15 minutes, then is warming up to 1160 DEG C of roastings
After 15 minutes, stop heating, be incubated 10 minutes；
(5) naturally cool to room temperature, i.e. can get described high-strength lightweight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610461345.6A CN106116194A (en) | 2016-06-23 | 2016-06-23 | A kind of waste residue that casts reclaims the high-strength lightweight of preparation |
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| CN201610461345.6A CN106116194A (en) | 2016-06-23 | 2016-06-23 | A kind of waste residue that casts reclaims the high-strength lightweight of preparation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111702124A (en) * | 2020-05-26 | 2020-09-25 | 襄阳聚力新材料科技有限公司 | High-strength high-toughness cast steel lost foam coating and preparation method thereof |
| CN114958447A (en) * | 2022-05-26 | 2022-08-30 | 含山县永帮再生资源利用有限公司 | Preparation method of biomass sludge briquette fuel based on foundry coke powder waste |
| CN114990329A (en) * | 2022-05-26 | 2022-09-02 | 中南大学 | Method for preparing high-strength lightweight aggregate by pellet roasting method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111702124A (en) * | 2020-05-26 | 2020-09-25 | 襄阳聚力新材料科技有限公司 | High-strength high-toughness cast steel lost foam coating and preparation method thereof |
| CN111702124B (en) * | 2020-05-26 | 2022-08-09 | 襄阳聚力新材料科技有限公司 | High-strength high-toughness cast steel lost foam coating and preparation method thereof |
| CN114958447A (en) * | 2022-05-26 | 2022-08-30 | 含山县永帮再生资源利用有限公司 | Preparation method of biomass sludge briquette fuel based on foundry coke powder waste |
| CN114990329A (en) * | 2022-05-26 | 2022-09-02 | 中南大学 | Method for preparing high-strength lightweight aggregate by pellet roasting method |
| CN114990329B (en) * | 2022-05-26 | 2023-10-24 | 中南大学 | Method for preparing high-strength lightweight aggregate by pellet roasting method |
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Application publication date: 20161116 |
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